well, about welding something to your cat, if you have it done right and don't skimp out on it, there are plenty of places that do tig welding, that will look perfect, I mean, go forbit someone might look under your car and see some nasty welds...lol....any way, neither the stock manifold or exhaust are very free flowing depending on what you have done, if you need a lot of flow, the stock stuff isn't cutting it.

The 4-2-1 design doesn't necesarily produce more toruqe, it just produces power in different places in the rpm band, and depending on the modifications done to the car, it could be more or less torque than the 4-1 in different places. Hard to explain, it's mainly mid range power with the 4-2-1, and mainly high end power on the 4-1.....

And, with a thousand dollars, you really can get a set of cams and a valve train, so you might as well get a really trick exhaust and just save for cams at a later date


Later,
Aj